00273nam a2200109Ia 4500082002400000100001900024245006400043260003600107300001000143500000500153700000500158  a338.540973bT587.BC  aTinbergen, Jan  aBusiness cycles in the United States of America 1919-1932b  aGenevabLeague of Nationsc1939  a244p.  a  a